<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>通配符选择器</title>
  <style>
    *{
      color:red;
    }
    /* * 这里把 html body div span li 等等的标签都改为红色*/
  </style>
</head>
<body>
<div>啦啦啦</div>
<div>啦啦啦</div>
<div>啦啦啦</div>
</body>
</html>